Fix error of autocommands

Previously all autocommands of the used autocommandgroup where removed
which causes several side effects. Now a flag is used to determine if
the autocommands of this plugin should be executed or not

autoload/dirsettings.vim

@@ -20,12 +20,29 @@
 "
 " Author: Christian Hammerl <info@christian-hammerl.de>
 "
-function!dirsettings#init(event, ...)
-	let fname = a:0 > 0 ? a:1 : '.vimdir'
-	let augroup = a:0 > 1 ? a:2 : 'dirsettings'
-	execute 'autocmd! ' . augroup
-    call dirsettings#load(fname)
-	execute 'doautocmd ' . a:event . ' *'
+
+let s:dirsettings_performing_autocommand = 0
+
+function! dirsettings#install(...)
+	let s:fname = a:0 > 0 ? a:1 : '.vimdir'
+	let s:augroup = a:0 > 1 ? a:2 : 'dirsettings'
+
+	execute 'augroup ' . s:augroup
+		au BufNewFile * call dirsettings#init('BufNewFile', s:fname)
+		au BufEnter * call dirsettings#init('BufEnter', s:fname)
+	augroup END
+endfunction
+
+function! dirsettings#init(event, fname)
+	try
+		if (s:dirsettings_performing_autocommand == 0)
+			let s:dirsettings_performing_autocommand = 1
+			call dirsettings#load(a:fname)
+			execute 'doautocmd ' . a:event . ' <buffer>'
+		endif
+	finally
+		let s:dirsettings_performing_autocommand = 0
+	endtry
 endfunction
 
 function! dirsettings#load(fname, ...)

readme.rst

@@ -17,20 +17,29 @@ With pathogen:
 
     git clone <github-url> ./dirsettings.git
 
+2. Create a symbolic link to the autoload vimscript provided by this package::
+
+    ln -s <path-of-this-package>/autoload/dirsettings.vim ~/.vim/autoload/
+
+   Or copy the provided autoload vimscript into your autoload directory::
+
+    cp <path-of-this-package>/autoload/dirsettings.vim ~/.vim/autoload/
+
 2. Add the following content at the top of your ``.vimrc`` (if you want to be
    able to modify the runtimepath before pathogen is invoked, it is important
    that this statement is executed before ``pathogen#infect`` is executed)::
 
-    execute 'source ' . expand("<sfile>:p:h") . '/../bundle/dirsettings.git/plugin/dirsettings.vim'
+    call dirsettings#install()
 
 The plugin places two autocommands (``BufNewFile, BufEnter``) with the
 autocommand group `dirsettings`. It calls an internally used function to load
-directory specific settings, deletes all autocommands of the group dirsettings
-and recalls the event (``BufNewFile or BufEnter``) which then calls other
-defined autocommands. This is because this has to be included at the very first
-in your ``.vimrc``. These autocommands should be the very first which get
-executed, otherwise it could happen that previously defined autocommands are
-called twice.
+directory specific settings, and sets a flag for the own autocommands so that
+they are not executed twice which would result in an endless recursion. After
+the flag was set, the current event is recalled which resets the flag (for
+another event) and calls all other defined autocommands. This is because this
+has to be included at the very first in your ``.vimrc``. These autocommands
+should be the very first which get executed, otherwise it could happen that
+previously defined autocommands are called twice.
 
 ===========
 ``.vimdir``